Author: admin

In this episode we move away from verticals and start modelling loop antennas.

Using MMANA-GAL, we draw a horizontal delta loop and explore how it behaves compared to a vertical antenna.

Along the way we also look at how ground conditions affect antenna performance, and why antennas near salt water can perform dramatically better.

In this video we:

• Benchmark a vertical antenna at low take-off angles
• See how changing ground conductivity affects performance
• Draw a horizontal delta loop using the wire editor
• Place the feedpoint and model a 4:1 balun
• Use wire scaling to tune the antenna to the correct frequency
• Compare the far-field plots of a loop and a vertical

You’ll also see how loop antennas behave on multiple harmonics, making them useful multiband antennas.

In the next episode we’ll convert this into a vertically polarised delta loop and compare the radiation patterns again.

Software used

MMANA-GAL (Basic version)
Free download:
http://gal-ana.de/basicmm/en/

Model files used in this series

All MMANA-GAL antenna models used in these tutorials can be downloaded here:

📁 https://mega.nz/folder/EnoXlTQL#Iuq-TqnW7ZglzkJMEIk59w

This folder will be updated as new videos in the series are released.

Full Video Playlist

📺 https://www.youtube.com/playlist?list=PLcC64tNkZB7zl-6HKJ5ihuSH3-22IX6kq

If you want to follow the whole modelling series, subscribe so you don’t miss the next episode.

In this episode we take the ground mounted vertical from Part 3 and add elevated radials to see how the antenna behaves.

Using MMANA-GAL, we model a simple vertical and experiment with different radial configurations to see how they affect the far-field radiation pattern.

In this video we:

• Start with a basic ground mounted vertical
• Add two elevated radials
• Compare radiation patterns using the Compare function
• Add additional radials and experiment with geometry
• Raise the antenna and slope the radials downward
• Observe how the low-angle radiation changes

The goal here isn’t deep theory – it’s learning how to draw the antenna and observe what happens when you change the geometry.

You’ll also see how elevated radials can slightly improve low-angle radiation, which is important for DX performance.

In the next episode we’ll move on from verticals and start looking at loop antennas.

Software used

MMANA-GAL (Basic version)
Free download:
http://gal-ana.de/basicmm/en/

Model files used in this series

All MMANA-GAL antenna models used in these tutorials can be downloaded here:

📁 https://mega.nz/folder/EnoXlTQL#Iuq-TqnW7ZglzkJMEIk59w

This folder will be updated as new videos in the series are released.

Full Video Playlist

📺 https://www.youtube.com/playlist?list=PLcC64tNkZB7zl-6HKJ5ihuSH3-22IX6kq

If you want to follow the whole modelling series, subscribe so you don’t miss the next episode.

Thanks to Regin (OY1R) and Stian (LB5SH) for arranging this. You may have heard them previously calling in to my streams with their home calls in the past. With the help of WhatsApp to get a sked, we made it. Just for fun guys, I don’t really collect DX Entities.

It takes a whole community to make these things happen and everyone should be proud, the operators, the major sponsors and of course the small donations from the average ham. I know it goes a long way.

You can hear Stian calling me as 3Y/LB5SH and that starts here:

I have to say, the team this time around have done an awesome job. I think they almost cleared 100,000 QSOs and a great boost and focus for many.

See https://3y0k.com/